Improvement ijm furniture-casters



I G. B. WARREN. FURNITU RE -CAS'I'ER. No. 177,903. Patented, May23,1876.

UNITED STATES PATENT OFFICE.

GEORGE B. WARREN, OF PROSPECT, ASSIGNOR TO LEWIS W. KLAHR AND CHARLES F.KLAHR, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT l.N FURNlTUR'E-CASTERS.

Specification forming part of Letters Patent No. 177,903, dated May23,1876; application filed March 29, 1876. I

To all whom it may concern:

Be it known that I, GEORGE B. WARREN, of Prospect, Butler county,Pennsylvania, have invented an Improvement in Furniture- Oasters, ofwhich the following is a specification:

My invention relates to that class of casters in which the stem carryingthe roller is adapted to a socket driven into the leg of a chair orother article of furniture; and the object of my invention is to retainthe said stem in the socket by a device, on the principle of What isknown as the bayonet-joint, and yet permit its withdrawal therefrom bya' slight manipulation. This object I attain in the manner which Iwillnow proceed to describe, reference being had to the accompanyingdrawing, in which- Figure 1 is a side view of the caster and one-half ofthetwo-part socket; Fig. 2, a sectional plan on the line 1 2, Fig. 1,drawn to an enlarged scale; and Fig. 3, a perspective view of a portionof the socket.

Ais the stem of the caster, and has at its lower end the usual arms a,carrying the roller B. The upper rounded end of the said stem, when theseveral parts of 'the caster are in their proper relative positions,bears against the concave portion a: of the interior of the socket B,which is made in two parts, inthe usual manner, as shown in Fig. 2.

Extending round the interior of the socket, at the lower end of thesame, is a retainingflange, E, the continuity of which is interrupted atthe point e, where a passage is formed in it for the pin fon the stem A,when the latter is introduced into the socket. This passage or recess ispartly vertical and partly horizontal, so that a slight manipulativeeffort is required to introduce the stem into the socket, and cause thepin f to pass through thesaid recess in the flange. When the stem hasbeen introduced into the socket, its accidental withdrawal, on liftingthe furniture to which it is connected, will be prevented by the pinf,flange E, and aprojection, 01, adjacent to the recess. When the socketis elevated, and the pin f is bearing on the flange E, the stem may beremoved after first raising it until the pin f coincides with thehorizontal portion of the recess c, and then turning the stem until thepin coincides with the Vertical portion of the recess.

I do not desire to claim, broadly, a caster. and socket secured by meansof a bayonetjoint, as this is old and weltknown; but

I claim as my invention In a furniture-caster, the combination of thestem A and its pinf with the internal flange E, recess e, and projectiond of the socket, all substantially as and for the purpose set forth.

In testimony whereofI have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE BAILEY WARREN.

Witnesses:

CHAS. (J. SULLIVAN, WILLIAM RIDDLE.

